. >> i think the jungle and that environment started to infect him almost like a virus. >> whatever it was that got into john mcafee, it was powerful. powerful enough that by july 2010 the antidrug crusader had acquired a pro-drug alias. writing as stuffmonger to an online drug discussion forum called bluelight mcafee boasted of purifying mdpv known as bath salts. it had increased alertness and turbo-charged sex drives, but along with that, experts say comes psychosis and paranoia. >> this is something that everybody knows is a nasty drug and yet john starts posting saying that he thinks it's the most extraordinary thing ever primarily because of the hypersexuality that it creates and in these posts he says that he's produced over 50 pounds of the substance and that he's distributed more than 3,000 doses of it throughout the country that he's in which is belize. >> when asked about that, though, mcafee told davis those postings were just a joke, part of a harmless prank. >> first of all, i wouldn't know how to produce 50 pounds of mdpv. i'm not a chemist. >> how had one of the silicon